名校
1 . 如图,已知三棱柱
中,侧棱与底面垂直,且
,
分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/044137f3-67f1-4350-928d-693b862a75f5.png?resizew=159)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
平面
;
(2)求平面
与平面
夹角的余弦值;
(3)点
在线段
上,若直线
与平面
所成角的余弦值为
时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3275dc6ee54ee3f1606e7b491a6a27ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d6e5b1970f8c445be8925e10105ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a2eab2323b9e1a46d0f1c834eb7b97.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/044137f3-67f1-4350-928d-693b862a75f5.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f2af0a097c6c0870b0db6a9bec14e4f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22064b7c5fdc0cd58905f49cc480b4e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40aa9bd446815b9b94a3b4623ba576b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e935bb9d7b7115429edbd1e7469af65.png)
您最近一年使用:0次
2 . 设数列
的前
项和为
,
,
,
.
(1)求证:
是等比数列;
(2)设
求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1767cce91b7607cfc2b255ed3f554e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9652f65b28e2032c0cbc2a9649db4f51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128d43fbfe37d2334f8666239efc7e32.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d0a41a16781e9467e8e7220534e343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2def5aa62f497709e1bd8258583d62fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c35926bf4b8e2c163c20942173cffcce.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,已知平行六面体中,底面
是边长为1的菱形,
,
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d7097c852a83e79453dd6fb244ac10.png)
您最近一年使用:0次
2023-01-11更新
|
430次组卷
|
6卷引用:重庆实验外国语学校2022-2023学年高二上学期期末数学试题
重庆实验外国语学校2022-2023学年高二上学期期末数学试题(已下线)第02讲 1.1.2空间向量的数量积运算(7类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)(已下线)高二上学期第一次月考十八大题型归纳(拔尖篇)(1)(已下线)专题01空间向量及其运算(4个知识点8种题型3个易错点)(2)(已下线)专题02 空间向量的数量积运算6种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)(已下线)通关练01 空间向量的运算及应用11考点精练(3)
4 . 如图,椭圆
和圆
,已知圆
将椭圆
的长轴三等分,椭圆
右焦点到右顶点的距离为
,椭圆
的下顶点为E,过坐标原点O且与坐标轴不重合的任意直线l与圆
相交于点A,B.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/42d9488b-c6e8-4aa9-ab78-02cefeb5311f.png?resizew=258)
(1)求椭圆
的方程;
(2)若直线
分别与椭圆
相交于另一个交点为点P,M.求证:直线
经过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/630cb5e3f23369a875a2b76a5501ea36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1b1ce092493086f74481b7d6dd9434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/42d9488b-c6e8-4aa9-ab78-02cefeb5311f.png?resizew=258)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57445efa8ad1501d049e551f34a158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
您最近一年使用:0次
2023-02-03更新
|
1098次组卷
|
4卷引用:重庆市铁路中学2023-2024学年高二上学期期中数学试题
名校
解题方法
5 . 已知函数
为自然对数的底数
.
(1)若函数
在区间
上存在极值点,求
的取值范围;
(2)设
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6bb5965cbdef1be2aed42867db5e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8a7ca71047ebe1782827a3710f1634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17d5af06ee5de2a20a4f63bf5c8174c.png)
您最近一年使用:0次
名校
解题方法
6 . 在平面五边形
中(如图1),
是梯形,
,
,
,
,
是等边三角形.现将
沿
折起,连接
,
得四棱锥
(如图2)且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/0cc5a5f4-2dac-4d22-b39b-01af047ed223.png?resizew=327)
(1)求证:平面
平面
;
(2)在棱
上有点
,满足
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25eb757d05fbff80d50c3bb8dbcb8657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af260e0d98c95d1e092dc4c6d348e3ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e60673e10b708be3e65a8c916356f22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/18/0cc5a5f4-2dac-4d22-b39b-01af047ed223.png?resizew=327)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3abb27f8d654064a92f9d7a11e586ab5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f85a3984ff5650e5845789b3b23f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0730e73ddbbf9184df15d3b1467e55e7.png)
您最近一年使用:0次
2023-01-15更新
|
581次组卷
|
3卷引用:重庆市育才中学校2022-2023学年高二上学期期末数学试题
重庆市育才中学校2022-2023学年高二上学期期末数学试题(已下线)第6章:空间向量与立体几何 章末检测试卷-【题型分类归纳】2022-2023学年高二数学同步讲与练(苏教版2019选择性必修第二册)云南省昆明市五华区云南师大实验中学2023-2024学年高二上学期11月月考数学试题
名校
7 . 已知函数
定义域为
,且函数
同时满足下列
个条件:①对任意的实数
,
恒成立;②当
时,
;③
.
(1)求
及
的值;
(2)求证:函数
既是
上的奇函数,同时又是
上的减函数;
(3)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc2ae509aed37fd2e2c8faa640ab231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0606c4ffcfe6f4709155d1e8671ee57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b6ef545119b52c3ed00ef54fcc314f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e38fffbc7ab9882480f4faa72390e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32822a106d217ffdec43557a236f786.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759b037e898a8fc7780d84fbb20fccd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab8da976feb42989ef07cf90c494c2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2023-01-10更新
|
662次组卷
|
3卷引用:重庆市铁路中学校2022-2023学年高一上学期期末数学试题
重庆市铁路中学校2022-2023学年高一上学期期末数学试题(已下线)专题3-6 抽象函数性质综合归类(1) - 【巅峰课堂】题型归纳与培优练山西省朔州市怀仁市第一中学校2023-2024学年高一下学期第一次月考数学试题
8 . 已知数列
的前n项和为
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d80fae39643a1ab1ba2c9b8edbc919.png)
,______.请在①
:②
,
,
成等比数列:③
,这三个条件中任选一个补充在上面题干中,并解答下面问题.注:如果选择多个条件分别解答,按第一个解答计分.
(1)求数列
的通项公式;
(2)若
,设数列{
}的前n项和
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36815c5c63a7b8b79974595f4149e292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d80fae39643a1ab1ba2c9b8edbc919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132e9579e58d8d5225e2340e1f43adf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3107c0f22c9b74fb0fdf7fcefe7dcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e84c30444f13d37ada78285dc4f83b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ad08078cd3177dc718ad8e74447f21.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d3d55a85012933f91c5d8d27d8801d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36815c5c63a7b8b79974595f4149e292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132e9579e58d8d5225e2340e1f43adf1.png)
您最近一年使用:0次
9 . 已知数列
的前
项的和为
,且
.
(1)求证:数列
是等比数列;
(2)求数列
的前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ead8921a4b8315ef84a8956b2c1cbac.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c033d0d59a0767eea50d0afa4737e4.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0496f142d8ae5acb06e83526eaa3ef87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2022-12-15更新
|
673次组卷
|
2卷引用:重庆市育才中学校2023届高三上学期第二次月考(12月)数学试题
名校
解题方法
10 . 在数列{
}中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6bc173c6a06e111b6738870a4cb85.png)
(1)求证:
是等比数列:
(2)求数列{
}的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6bc173c6a06e111b6738870a4cb85.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7d94406136605c5bc9cd9295d6c9fa.png)
(2)求数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2023-01-15更新
|
625次组卷
|
4卷引用:重庆市育才中学校2022-2023学年高二上学期期末数学试题